I don't think that's what OP was saying at all, though. I took his comment as saying that we often expect too much structure from kids at too young of an age, then diagnose the worst of them. For example, at age 7 I was still bursting with pent-up energy and often didn't want to sit still, especially if I was bored. My first grade teacher once taped me to my chair to try to get me to sit still during reading time (I was reading at a higher level, and "See Spot Run" bored me to tears). She and my kindergarten teacher probably could have pushed for an ADHD diagnosis, but they didn't because I think they realized that we often shove kids too young and expect them to adapt to a fairly rigid structure too quickly.

Now, I'm not saying that nobody has ADHD and that it's not a horrible problem for those who do. Sometimes, I really do wonder if I might have it, though I tend to think against it. But for those who truly do have ADHD, I understand that medicine is needed, and that the sooner we give it, the better off those students can learn. I just feel that OP was saying we test for it way too young, and expect way too much out of kids when testing for it.